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BMW 3-Series (E90 E92) Forum
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Does one even NEED an intake?
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06-29-2009, 11:23 AM | #23 |
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That is really with every aftermarket filter or intake though. I would suggest more than every 20-30k miles though.
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06-29-2009, 02:20 PM | #24 |
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You don't have to but now that you are adjusting the software, it makes sense to take advantage of the ability to change your A:F ratios to take advantage of an intake. Your software gains will be better with a freer flowing intake.
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